In addition to adding real-time analytics alerting functionality to a range of PC and embedded devices, the VCA engine can also be used to implement a forensic post-event search system.

When paired with a relational database, the metadata can be used to implement post-event forensic search systems

Such a system can be implemented with the following steps:

Feed real-time video into the VCA engine

Parse the XML metadata stream generated by the engine and insert it into a relational database

When the client issues a search request, assemble a query and execute it on the database

For the results that are returned, fetch the corresponding video from the video archive

At the client side, overlay the annotation of the VCA event on top of the video and replay it

The major benefit of a forensic search system is that the search parameters can be selected after an event has occurred: zones, rules and search time can all be retrospectively changed, which cuts down search times by many orders of magnitude.

For more information about where to get VCA and for assistance with integrating the engine to add value to your solution, please contact us.